There are some LGs on Verizon, too. If the model number ends with a C (for CDMA / Verizon) it's on Verizon, and if it ends with a G (GSM / AT&T) or is a Nokia smartphone, it will be on AT&T.
Originally Posted by Skydmark1
Past providers: RingPlus, Page Plus, Virgin, Straight Talk, T-Mobile, Verizon, AT&T.
Past phones: Nokia 820, Motorola Atrix HD, iPhone 4S, HTC One V, iPhone 4, Nokia Lumia 900, Nokia N9, Samsung Focus, Samsung Captivate, Nokia N900, HTC 8525, iPhone 3GS, iPhone, Nokia E61i, Siemens A56...